Flap of a bag



FIG. 1 is a perspective view thereof;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a third side view thereof;

FIG. 5 is a fourth side view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top view thereof.

The broken lines representing portions of the handbag are included for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a flap of a bag, as shown and described. 